NiCoP fibers as novel catalysts for hydrogen evolution in alkali and acidic environment
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43930161" target="_blank" >RIV/60461373:22310/24:43930161 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0360319924006177?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0360319924006177?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijhydene.2024.02.195" target="_blank" >10.1016/j.ijhydene.2024.02.195</a>
Alternative languages
Result language
angličtina
Original language name
NiCoP fibers as novel catalysts for hydrogen evolution in alkali and acidic environment
Original language description
NiCoP transition metal phosphide has been recognized as a most promising candidate to alternate the noble metals in hydrogen evolution reaction. Herein, it is first time presented the facile preparation of NiCoP electrocatalyst in form of fibers with dominant 1D structure formed by needle-less electrospinning technology and finalized by defined heat treatment process. The study provides a precise method for the preparation of NiCoP or similar phosphide fibers, together with an experimental proof of their excellent electrocatalytic performance in alkali and acidic environments. The as-prepared fibrous NiCoP electrocatalyst sintered in air at 900 degrees C followed by sintering at 700 degrees C in Ar/H-2 exhibits low hydrogen evolution reaction overpotential (eta(10)) of 141 mV in alkali and 146 mV in acidic environment corresponding with low Tafel slopes of 53 and 97.8 mV/dec, respectively. The bimetallic phosphide also shows superior oxygen evolution reaction activity in alkaline medium 1 M KOH with satisfying durability in long-term stability tests. The highly innovative fibrous form of the material not only plays a significant role in regulation of the electronic structure and boosting the electrochemical active sites and thus the electrocatalytic performance in water splitting technology, but also allows tuning of the electrode electric conductivity, occurrence of the active sites probability and thus utilisation of the electrode, together with its permeability and mechanical stability.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
<a href="/en/project/EF16_025%2F0007414" target="_blank" >EF16_025/0007414: Fuel Cells with Low Platinum Content</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
ISSN
0360-3199
e-ISSN
1879-3487
Volume of the periodical
60
Issue of the periodical within the volume
March
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
118-132
UT code for WoS article
001200687400001
EID of the result in the Scopus database
2-s2.0-85185324988